Dehydrator



W. 0. CARDIN.

DEHYDRATOR.

APPucATloN FlLEuNov. 23,1920. RENEWED DEc.21,1921.

Ptfllted July 18, 1922.

5 SHEETS-SHEET 1.

.igp 1 W. 0. CARDIN.

v D'EHYDRATOR. APPLICATION FILED NOV. 23,1920. RENEWED DEC. 21, 192|.

Patented. July 18, 1922.

5 SHEETS-SHEET?.

W. 0,. CARDIN.

DEHYDRATOR APPLICATION FILED 2 RENEWED DEC. ZI; I92I. II ,423, l 8. Patented July I8, w22. 5 EEEEEEEEEEEE a.

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`DEHYDRATOR.

APPLICATION FILED Nov. 23,1920. REIIEWED DISC. 21, 1921.

,423s ll. 88, v Patented July I8, E922( 5 SHEETS-SHEET 4.

W. 0. CARDIN.

DEHYDRATOR.

APPLlcA'TxoN FILED Nov. 23,1920. nENEwED D|:c 21,1921. L.

Patented July 18, 1922.

5 SHEETS-SHEET 5.

gnvento'v A aaqmn WILLIAM O. CARDIN, O F JOILIN, MISSOURI ASSIGNQR T0 J. W. FREEMAN,OF JOPLIN,

MISSOURI.

Dnnvnne'roa.

Application led November 23, 1920, Serial No. 426,060. Renewed December 21, 19,21. Serial No. 523,881+).

. To all whomz't may concern:

Be it known that I, WILLIAM O. CARDIN, a cltizen of the United States, residing at Joplin, in the county of Jasper and State of Missouri, have invented certain new and useful Improvements' in Dehydrators, of which the following is a specification. I Thls invention relates to dehydrators, and 1t comprises certain novel combinations of material containing means, and means for evenly distributing heat about the material being dried and means for controlling the passage of the heated air through the maeating unit terial containers. u 1

1. An important object of the invention is to provide an apparatus of the above men tioned character in which a great variety of fruits, vegetables, meats, and the like, can be thoroughly dried and wherein only water is removed from the material being drled so that it maintains its original color, and taste. 't

Other objects and advantages of the in, vention will be apparent during the course of the following description.

`1n the accompanying drawin Jforming a part of this specification an in which like numerals are employed to designate likeparts throughout the samc- Figure 1 is a central vertical longitudinal` sectional view of the device,

Flgure 2 is a section taken on line 2-2 of Figure'l,

Figure 3 is a section taken on lineA3--3 of Figure 1,

Figure 4 is a similar 4 4 of Figure 1, y

Figure' is a similar view takenzon line 5-5 of Figure 1,

Figure 6 is a front lelevation ofa modi- Hed form of the device, parts being shown in lsection for the purposel of illustration, an: i Figure 7 is a section takenfonfline7 134 of Figure 6. A l

In the drawings wherein for-thefpurpose of illustration are shown preferredembodiments of my invention, the Enumeral 10 vview taken in line 'designates a heating unit as a whole,com

prising a Hre box 11, and-ash-pit 12.- Thev 10 is mountedat 'one end oit the device and serves as a support for same. Secured to the lower face of the pit 12' 'is a plate 13, to which is secured a pair of substantially hemispherical mem?` Specification of Letters Patent.

the ash ,-37 ,and the longitudinal center-oi? the plate reenorced, as at 38.- The baeplate 34 isprovided `around the outer portion` thereofI Patented Jury is, i922.

bers 14, adapted for` engagement within sockets lf-secured to the Hor in any suitable manner'. "The members 14 and 15 serve as ball and socket joints, rwhereby the device ma be tilted longitudinally.

he numeral 16 designates a heater casing, comprising a lower wall 17, end walls y that the entire area of the-lower tacel ofV the Hue wall 23 is exposed to the action of the heat of the Hre box. The end of the Hue 24 opposite the;'heating unit is open and communicates with aHue pipe 25, theend of Whichis Hared as at 26, at its point of connection with the Hue` 24. The Hue 25 is providedwith adamper 27 of the vusual type to regulate the-fire in the Hre box\11.

. A pair of solid bae plates 28 and 29 are mounted within the casing 17 horizontally thereof, forming passages 30 and 31, for the passage of heated air. It will be noted that the bame plates 28 and'29 are staggered, the plate 28 having one end in connection `with the wall'18 of the casing 16, and its opposite throughout the entire end spaced from the wall 19,.while the bae plate. 29 has one end connected tothe wall 19v or'v thel casing 16', and ,its opposlte end spaced the' wall 18..` The passage 30 hasv communication with. the atmosphere through opening 32 in the end wall 18 ofthe casing 16. The baHles 28 and 29 serve to retard the movement' of the heated air, for a purpose to be described. A second pair of.

bamfe plates 33 and134 are also mounted withv in the lcasing 16these baille lates being also spaced from each other, an from the baille plate 29.1 As shown in Figure 5, the baille plate 33 is provided in each `corner with relatively large openings 35, and substantially .centrally ofits length with relatively small openings. 36, 'for' the passage-and distribution of heated air. .If desired,` the 'corners of the-[bams plate 33 may be reenorc'e'd, as at ice soV

to be described.

'A drier casing 41 is mounted above the casing 16, and it comprises a substantially semi-circular upper wall 42, and verticalfront and rear walls 43 and 44. The drier casing 41 is also provided with vertical end Walls 45 and 46. The end walls 45 and 46 have bearings 47 and 48 mounted thereon to receive the central longitudinal shaft 49.

A rotatable material container 50. preferably of open mesh wire, is mounted within the casing 41, the container 5() being provided at its ends with reenforcing bands 51, connected by arms 52 with the shaft 49. The arms 52 may be secured to the shaft 49 in any suitable manner, such as by collars 53 and set screws 54. The shaft 49 is connected with the container 5() at intervals throughout its length by collars 55 and spiders 56. One end of the shaft 49 is provided with a gear 57 adapted to be driven from any suitable source of power. The container 50 is provided substantially centrally thereof with spaced bearing bands 58, adapted to" contact rollers 59 carried by bearings 60, secured to the plate 34. The rollers 59 serve to support the central portion of the container 50 to relieve lche central portion of the shaft of strain when the device is in operation, and the container filled with the material being dried.

The end wall 46 of the casing 41 is provided with a hopper 61 through which the material to be dried is fed to the cylinder. The hopper 61 is preferably provided with a hinged cover 62. The opposite end 45 of the casing 41 is apertured, as at 63, for the egress of the material within the cylinder after it has been dried. The aperture 63 communicates with a discharge chute 64 and the aperture 63 is closed during the operation of the machine by a gate or slide 65, slidable Withinppenings 66 in the walls of the chute 64.

The upper portion of the casing 41 is provided with branch flues 67,through which the heated air passes from. the casing 41. The flow of heated air is governed by suitable dampers .68. The heated air passes from the branch flues 67 to a collector flue 69 and main flue 70, which carries the air to the heater Hue 25.

An internally threaded block 71 is attached to the under side of the wall 17 at the end oppositel the heater and a similar block 7 2 is attached to the floor, the blocks 71 and 72 being normally spaced apart when thev device is in the horizontal or normal position. The openings in the v.blocks 71 and 72 are oppositely screw-threaded to receive the oppositely screw-threaded nuts on a jack screw 73, adapted to be rotated through the medium of a handle or wheel 74.

In Figures 6 and 7,1 have illustrated a modified form. of the invention, wherein the heater element 1() is adapted to rest directly upon the floor, the opposite end of the device being supported upon legs 75. The heater casing 16 is provided with an arrangement of flue, baffle plates, and air passages similar to that shown in the preferred embodiment of the invention.

ln this form of the invention, l prefer to provide separable container units 76, the fronts, tops and bottoms of which are open, having solid end and back walls 77 and 78. The endwalls 77 of the casings 76 are provided with supports 79 adapted to support trays 80. The trays 8O are preferably formed of open mesh wire. the outer edges of which are attached to solid frames 81.

The fronts of the units 76 are adapted to be closed while the device is in operation by doors 82, preferably provided with a packing 83 of felt or the like. The center of the doors 82 are apertured to receive threaded bars 83, connected to the outer face of the door with a rotatable wheel 84. Thel inner or screw-threaded ends of the bars 83 are adapted to be received in screwthreaded openings of transverse bars 85. extending between the ends of the units 76. It will be apparent that when the inner ends of the bars 83 are introduced into the open` ings in the bars 85 and the'wheels 84 rotated, the doors 82 may be clamped tightly against the fronts of the casings to prevent leakage of the heated air.

The upper ends of the units 76 are adapted to be closed by an inverted V-shaped top 86 provided with closed ends 87. The heated air within the casings 76 is adapted to pass out through branch flues 88, and the top 86 is provided with baffle plates 89 arranged directly below the flues toprevent the heated air from being drawn directly into the flues. If desired, the top 86 may be provided with thermometers 90, so that the heat within the casings may be determined at any time.

The operation of the preferred form of my invention is as follows:

The fire within the fire box 71 isadapted to heat the wall -23 throughout its entire area, the products of combustion passing out through the flue 25. Air is admitted through the opening 32 and passes slowly along the passage 30 in contact with the wall 23, and becomes heated to a high temperature. The arrangement of the baiiie plates 28 and 29 serve to retard the passage of the air so that it is maintained in contact with the plate 23 throughout a longer llt) the position shown in Figure 1. After thematerial within the container has been suitably dried, the islide 65 is opened, andv the wheel 74 rotated, elevating the end of the'casing so that the dried material moves to the opposite end of the container and is discharged through the aperture 63 and chute 64. l

In the modiiied form of the invention, the material is placed upon the trays 80 and the trays'inserted within the casings 76, as shown. The door 82 is then closed in the manner described, until the material has been suitably dried, when the trays maybe withdrawn.-

It is to be understood that the forms of my invention herewith shown and described are to. be taken as preferredexamples of the same, and that various changes in the shape,` size, and arrangement of parts may` be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

I-Iaving thus described my invention, I claim:

1. In a device of the character described, a `heating unit, a heater casing, said heater casing comprising a flue communicating with said heating unit, a plurality of staggeredbaile plates, a plate mounted above said baffle plates and provided with relativelylarge openings, and a distributing plate mounted above said last named plate and provided with relatively small openings, said heater casing being provided with an air intake opening, a casing mounted above and communicating with said heater casing, and means carried within said .last

named casing for supporting the material to be dried.

2. `In a device of the character described,

. a heating unit, a heater casing, said heater provided adjacent its edges with relatively casing comprising a flue communicating with *a discharge chute mounted at one end of said heating. unit, a plurality .of baiie plates,

-each of said baiile plates having an end seopposite ends of said heater casing, a plate mounted above said bale plates and pro-- vided adjacent its corners with relatively laige openings, and a distributing plate mounted above said last named plateY and small openings,` the central portion of said distributing plate belng solid, said heater casing being provided with an air inlet openlng arranged below the lowermost baiile plate, a casing mounted above and communicating with said heater' casing, and means carried withln said last named cas.

ing for supporting the material to be dried. 3.' In a device of the character described, a. heating unit, a heater casing, said heater casing comprising a flue communicating with said heating unit, a plurality of staggered battle 'pla-tes, a lplate mounted above said baffle plates and provided with relatively large 'o enings, and a distributing plate mounte above said last named plate and provided with relatively small openings, said heater casing being provided withan air intake opening, a casing mounted above and communicating with said heater casing, and a rotatable perforate material supporting member mounted within said last named casing.

4. In a ldevice of the character described, a heating unit, a heater casing, said heater casing comprising a flue communicating with said heating unit, a plurality of staggered baie plates, a plate mounted above said baille plates and provided with relatively large openings, and a distributing i plate mounted above said last named plate and provided with relatively small openings, said heater casing being provided with an air intake opening arranged below the lower- -most baiile plate, a casing mounted above and communicating with said heater casing, a rotatable per'forate `material supporting member mounted within said last named casing, and means for tiltingsaid heater cas- 1n In a device of the character described, a heating unit, a heater casing, said heater casing comprising a flue communicating with said last named casing, a door mounted adjacent said discharge chute', and means for tilting said heater casing.'

6.` In a device of the character described,

a heatingunit, a heater casing, said heater casin comprising a Hue communicating with said eating unit, a plurality of ,staggered baille plates, a plate mounted above said baffle plates and provided with relatively large openings, and a distributing plate mounted above said last named plate and provided with relatively small openings, said heater casing being provided with an air intake opening, a casing mounted above and communicating with said heater casing, a rotatable shaft carried by said last named casing, a cylindrical perforate material supporting member mounted upon said shaft, and means carried by said distributing plate for supporting said material supporting member between the ends thereof.

7. In a device of the character described, a heating unit, a beater casing, said heater casin comprising a flue communicating with said eating unit, a plurality of staggered balile plates, a plate mounted above said baille plates and provided With relatively large openings, and a distributing plate mounted above said last named plate and provided with relatively small openings, said heater casing being provided with an air intake opening, a casing mounted above and communicating with said heater'easing, a rotatable shaft carried by said last named casing, a cylindrical perforate material supporting member mounted upon said Shaft, a bearing band secured to the outer face of said material supporting member, a pair of rollers mounted upon said distributing plate and adapted to contact said bearing band, means for governing the discharge of material from said material supporting member, and means for tilting said heater casing.

In testimony whereof I aflix m signature.

WILLIAM O. ARDIN. 

